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Pinhead mirror technology was protected under US patent 4,948,211 - "Method and Apparatus for Optical Imaging Using a Small, Flat Reflecting Surface" until the patent expired in 2009. Disco balls can be used as pinhead mirrors to project solar images. The math behind them is the same as for a square pinhole.
A slim jim (more technically known as a lockout tool) is a thin strip of metal (usually spring steel) roughly 60 centimetres (24 in) long and about 2–4 centimetres (0.79–1.57 in) wide originally marketed under that name by HPC Inc., a manufacturer and supplier of specialty locksmithing tools.
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Pack Sleep Aids: If you have the luggage space, consider bringing an eye mask, earplugs or a white-noise machine to create a more sleep-friendly environment. The Bottom Line Travel can disrupt ...
A man who was running away from police has been arrested after getting stuck in a chimney while trying to hide from them, authorities said. The incident occurred on Tuesday evening in Fall River ...
More than three months after the $40 million Bayesian superyacht sank off the coast of Sicily, killing seven people including British tech titan Mike Lynch and his 18-year-old daughter, plans to ...
Traditionally, objects like pencil, compass, ruler, drawing triangle have been considered design tools and have been used to characterize design and designers. [4] One reason for the success of traditional design tools such as pencil and paper is that these tools can be used without any special knowledge and their usage facilitates a continuous ...
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